When the bag filter increases the filtration air speed, it has a series of effects on the filtration effect and equipment operation. First of all, under the premise that the treatment air volume remains the same, increasing the filtration speed can save the use of filter media, thereby improving the processing capacity of filter media. This change means that more airflow can be processed in the same processing time, increasing the efficiency of the collector. However, the increase in filtration speed also leads to an increase in equipment resistance, which increases energy consumption and operating costs. This means that more energy needs to be consumed in order to keep the collector up and running, which increases operating costs.
In addition, when the filtration rate is too high, the dust layer that accumulates on the filter bag is compacted, which further increases the filtration resistance. In this process, due to the increase in the pressure difference between the two sides of the filter bag, fine dust may penetrate into the filter media and even penetrate the filter material, resulting in an increase in the dust concentration at the outlet. This means that while the filtration speed has increased, the filtration performance has not improved, but may have become worse.
In addition, high filtration air velocity can also lead to the rapid formation of a dust layer on the filter media, making ash cleaning too frequent, increasing ash cleaning energy consumption, and shortening the service life of the filter bag. Frequent cleaning operations not only increase energy consumption, but also shorten the life of the filter bags, which increases maintenance costs.
Therefore, when selecting the filter air speed of the bag filter, it is necessary to comprehensively consider multiple factors such as the treatment air volume, equipment resistance, energy consumption, operating costs and the service life of the filter bag. Proper filtration air speed selection is essential to ensure the performance and long-term stable operation of the dust collector. Only by considering various factors can the most suitable filter air speed be selected to ensure the performance and long-term stable operation of the dust collector.
Pulse bag filter